How do you get that treasures mean rewards?
Look in the context of what Jesus spoke those words:
Matthew 6:19-20 Lay not up for yourselves treasures upon earth, where moth and rust doth corrupt, and where thieves break through and steal: But lay up for yourselves treasures in heaven, where neither moth nor rust doth corrupt, and where thieves do not break through nor steal:
--Your treasure is your reward. Have you ever heard of a treasure chest? A box full of treasures, full of good things, or rewards, or a reward for finding it? Jesus said to put it where it won't rust, where moths won't eat it, where thieves can't steal it, where those rewards will be safe. Those are your rewards. He is speaking of rewards.
From Thayer's Lexicon: "treasure"
Thayer Definition:
1) the place in which
good and precious things are collected and laid up
1a) a casket, coffer, or other receptacle, in which valuables are kept
1b) a treasury
1c) storehouse, repository, magazine
2) the things laid up in a treasury, collected treasures
--It figuratively refers to our good works. What else could it refer to?
I believe that treasures spoken of it the wisdom and knowledge we find by obeying Jesus’ teachings. See Colossians 2:3.
Context:
Colossians 2:2-3 That their hearts might be comforted, being knit together in love, and unto all riches of the full assurance of understanding, to the acknowledgement of the mystery of God, and of the Father, and of Christ;
3 In whom are hid all the treasures of wisdom and knowledge.
--This is a completely different context. "In whom" refers to Christ. In Christ is all wisdom and knowledge, not in the believer. We have access to some of it.
I do not believe as you say that salvation is a gift with no conditions attached.
It is what the Bible teaches. If it has conditions attached, then what are the conditions? Keeping the Ten Commandments? Being circumcised as the Judaizers taught? That is legalism and it is a false doctrine. Salvation is by faith and faith alone. It is a gift to be received. If it is to be received by faith there are no conditions. It is not to be worked for.
We are to aim for perfection. We are to obey Jesus.
You can set that as your goal, but you will not attain perfection in this lifetime. If you think you must attain perfection before entering into heaven you will fail and enter into hell instead.
As for you saying a gift is different from a reward, please note that they are synonyms. I do not believe gifts and rewards are synonyms of treasures.
They are not synonyms.
I give a dog a treat or reward when I train him, when he does good.
When good is done he is rewarded.
If he does bad he receives punishment.
Salvation is a gift given without reward, without works, without anything worked for. They are not synonymous.
If you believe not me, believe the Scriptures:
Romans 4:4-5 Now
to him that worketh is the reward not reckoned of grace, but of debt. But to him that worketh not, but believeth on him that justifieth the ungodly, his faith is counted for righteousness.
These two scriptures tell us that the “inheritance” is the “reward,” and that the “eternal life” is the inheritance.
Colossians 3:24 since you know that you will receive an inheritance from the Lord as a reward. It is the Lord Christ you are serving.
CONTEXT:
Colossians 3:23 And whatsoever ye do, do
it heartily, as to the Lord, and not unto men;
--It is speaking of service, not eternal life. The service is the inheritance. Whatever you do, do it heartily, as to the Lord. That is service.
Matthew 19:29 And everyone who has left houses or brothers or sisters or father or mother or wife or children or fields for my sake will receive a hundred times as much and will inherit eternal life.
Why do you go against the scripture here that Jesus says, “inherit eternal life”? Why do you think Jesus says, “Inherit eternal life” if that is not what we inherit?
They were going to heaven far before this. They already had eternal life. He was speaking of sacrifice. The context is obvious. He is speaking of forsaking all for Jesus. Jesus does add that on. But the emphasis is on service. Their reward was in their service. Some will receive a hundred fold in reward.