Rev 22:17 And the Spirit and the bride say, Come. And let him that heareth say, Come. And let him that is athirst come. And whosoever will, let him take the water of life freely.
V-14 Blessed [are] they that do his commandments, that they may have right to the tree of life, and may enter in through the gates into the city.
V-1,2 And he shewed me a pure river of water of life, clear as crystal, proceeding out of the throne of God and of the Lamb. In the midst of the street of it, and on either side of the river, the tree of life, which bare twelve fruits, [and] yielded her fruit every month: and the leaves of the tree for the healing of the nations.
John 7:37 In the last day, that great [day] of the feast, Jesus stood and cried, saying, If any man thirst, let him come unto me, and drink.
Lev. 23:36 Seven days ye shall offer an offering made by fire unto the LORD: on the eighth day shall be an holy convocation unto you; (The seventh of seven holy convocations, sabbath of feasts of the LORD.)
Was there any significance in that this which Jesus spoke on the last day, that great of the feast relative to whom and when it would apply. Please bear with me.
Romans 11:26 And so all Israel shall be saved: as it is written, There shall come out of Sion the Deliverer, and shall turn away ungodliness from Jacob:
Ezekiel 37:21,22,27 And say unto them, Thus saith the Lord GOD; Behold, I will take the children of Israel from among the heathen, whither they be gone, and will gather them on every side, and bring them into their own land: And I will make them one nation in the land upon the mountains of Israel; and one king shall be king to them all: and they shall be no more two nations, neither shall they be divided into two kingdoms any more at all:
My tabernacle also shall be with them: yea, I will be their God, and they shall be my people.
Acts 15:17 That the residue of men might seek after the Lord, and all the Gentiles, upon whom my name is called, saith the Lord, who does all these things. (Notice they seek both the Lord and the Gentiles upon whom his name is called) (Joel 2:32 says the same thing.) And it shall come to pass, [that] whosoever shall call on the name of the LORD shall be delivered: for in mount Zion and in Jerusalem shall be deliverance, as the LORD hath said, and in the remnant whom the LORD shall call. (Who are they?)
Lev. 23:34,35 Speak unto the children of Israel, saying, The fifteenth day of this seventh month the feast of tabernacles seven days unto the LORD. (On the first day an holy convocation: ye shall do no servile work
The sixth holy convocation, sabbath of feasts of the LORD.)
Acts 15:16 After this I will return, and will build again the tabernacle of David, which is fallen down; and I will build again the ruins thereof, and I will set it up. Luke 1:32 He shall be great, and shall be called the Son of the Highest: and the Lord God shall give unto him the throne of his father David: Mark 1:14 Now after that John was put in prison, Jesus came into Galilee, preaching the gospel of the kingdom of God, John 3:3 Jesus answered and said unto him, Verily, verily, I say unto thee, Except a man be born again, he cannot see the kingdom of God. 1 Cor. 15:50 Now this I say, brethren, that flesh and blood cannot inherit the kingdom of God; neither doth corruption inherit incorruption. 1 Cor. 15:52 In a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed. Rev. 11:15 And the seventh angel sounded; (the last trump) and there were great voices in heaven, saying, The kingdoms of this world are become of our Lord, and of his Christ; and he shall reign for ever and ever.
Lev. 23:24 Speak unto the children of Israel, saying, In the seventh month, in the first [day] of the month, shall ye have a sabbath, a memorial of blowing of trumpets, an holy convocation.
(the fourth holy convocation, sabbath of feasts of the LORD.)
Acts 15:14 Simeon hath declared how God at the first did visit the Gentiles, to take out of them a people for his name. Romans 11:5 Even so then at this present time also there is a remnant according to the election of grace. Romans 9:16 So then not of him that wills, nor of him that runs, but of God that shows mercy. Romans 8:29 For whom he did foreknow, he also did predestinate conformed to the image of his Son, that he might be the firstborn among many brethren. (Who are these?) Romans 8:23 And not only [they], but ourselves also, which have the firstfruits of the Spirit, even we ourselves groan within ourselves, waiting for the adoption, [to wit], the redemption of our body.
Lev. 23:15,16,17 And not only [they], but ourselves also, which have the firstfruits of the Spirit, even we ourselves groan within ourselves, waiting for the adoption, [to wit], the redemption of our body. Even unto the morrow after the seventh sabbath shall ye number fifty days; and ye shall offer a new meat offering unto the LORD. Ye shall bring out of your habitations two wave loaves of two tenth deals: they shall be of fine flour; they shall be baken with leaven; the firstfruits unto the LORD. (Day of Pentecost the feast of firstfruits to take out a people for my name.)
V-21 And ye shall proclaim on the selfsame day, it may be an holy convocation unto you: ye shall do no servile work a statute for ever in all your dwellings throughout your generations. (The third holy convocation, sabbath of feasts of the LORD.)
There is a reason even for us for the feasts of the LORD.
God will do the calling and the saving in his due time. Acts 15:18 Known unto God are all his works from the beginning of the world.
Ephesians 1:9,10 Having made known unto us the mystery of his will, according to his good pleasure which he hath purposed in himself: That in the dispensation of the fulness of times he might gather together in one all things in Christ, both which are in heaven, and which are on earth; in him:
BTW I do not think Calvin understood the above either. I grew up Presbyterian and presently Great Commission Baptist (Ha) about 30 years each but do not consider myself Calvinist. Electionist maybe.