This is from the pen of Dr. John Gill in relation to a verse that contradicts your verse if it is in relation to repentance for eternal salvation.
Romans 11:29
Ver. 29. For the gifts and calling of God,.... By "gifts" are meant, not the gifts of nature and providence, as life, health, strength, riches, and honour, which God sometimes gives, and repents of, and takes away; as he repented that he had made man upon earth, and Saul king of Israel; which must be understood by an "anthropopathy", after the manner of men, and that not of a change of the counsel of his mind, but of the course of his providence: nor do gifts here design external gifts of grace, or such gifts of the Spirit, which qualify men for ministerial work, for public service in the church; for these may be taken away, as the "parable" of the "talents" shows, Mt 25:29; see 1Co 13:8; but the special and spiritual gifts of God's free grace, which relate to the spiritual and eternal welfare of the souls of men, even that, grace which was given to God's elect in Christ before the world was, and all those spiritual blessings wherewith they were then blessed in him: these
are without repentance; that is, they are immutable and unalterable; God never revokes them, or calls them in again, or takes them away from the persons to whom he has made such a previous donation: the reasons are, because that his love from whence they spring is always the same; it admits of no distinction, nor of any degrees, nor of any alteration; and electing grace, according to which these gifts are bestowed, stands sure and immovable; not upon the foot of works, but of the sovereign will of God, and always has its sure and certain effect; and the covenant of grace, in which they are secured, remains firm and inviolable; and indeed, these gifts are no other than the promises of it, which are all yea and amen in Christ, and the blessings of it, which are the sure mercies of David. Whatever God purposes, or promises to give, or really does give to his people, whether into the hands of Christ for them, or into their own, he never repents of or reverses. Agreeably to these words of the apostle, the Jews say {g}
"that the holy blessed God, after hntmh Ntnv, "that he hath given a gift", lbqmh hnxqy al, "never takes it away from the receiver"; and this is the "Gemara", or doctrine of the Rabbins {h} ylqv al lqvm ybhy bhymd, "that giving they give, but taking away they do not take away"; the gloss upon it is, ybhyd rtb, "after it is given":''
the meaning is, that what is once given to men from heaven, is never taken away from them up into heaven: and elsewhere {i} they ask,
"is there any servant to whom his master gives a gift, and returns and takes it away from him?''
Moreover, the apostle here says the same of the "calling of God", as of gifts; by which is meant, not a bare external call by the ministry of the word, which oftentimes is without effect, and may be where persons are neither chosen, nor converted, nor saved; but an internal effectual call, by special, powerful, and efficacious grace; and designs either actual calling, to which are inseparably annexed final perseverance in grace, and eternal glorification; or rather the purpose of God from eternity, to call his people in time, and which is never repented of, or changed. The apostle's argument here is this, that since there are a number of people among the Jews whom God has loved, and has chosen to everlasting salvation, and has in covenant promised to them, and secured and laid up gifts for them, and has determined to call them by his grace; and since all these are unchangeable and irreversible, the future call and conversion of these persons must be sure and certain... Brother Glen
[ January 30, 2003, 11:10 AM: Message edited by: tyndale1946 ]
You couldn't have gotten mine, since I still have it right here. 
