He who made the promise is trustworthy

"Let us hold unwaveringly to our confession that gives us hope, for he who made the promise is trustworthy."

Lord, you give us the consolation of the truth through the scriptures.  Thank you for those whom you have enlightened to unpack these precious promises for us.  I found two commentaries on the above scripture by John Gills and Matthew Henry that bring me much joy and consolation.

"For he [is] faithful that promised;
that is God; and it is true of Father, Son, and Spirit; but God the Father may be more especially designed: he is a promising God, and is known to be so by his people; he is eminently and emphatically the Promiser; and all other promisers, and the promises made by them, signify little; but the promises of God are exceeding great and precious, very ancient, free, and unconditional, irrevocable and immutable, and are admirably suited to the cases of his people, and will be fulfilled everyone of them: they include in them things temporal, spiritual, and eternal; things temporal, as that his people shall not want, that their afflictions shall work for good, and that he will support them under all their troubles; things spiritual, as that he will be their God, which takes in his everlasting love to them, and his gracious presence with them, and his protection of them; and that all grace shall be wrought in them, and every blessing of grace bestowed on them: and things eternal; as everlasting glory and happiness; the promise of eternal life was in God's heart, made in the covenant, and put into Christ's hands before the world began, and is declared in the Gospel: now God is faithful to all his promises, nor can he fail, or deceive; he is all wise and foreknowing of everything that comes to pass; he never changes his mind, nor forgets his word; and he is able to perform, and is the God of truth, and cannot lie; nor has he ever failed in anyone of his promises, nor will he suffer his faithfulness to fail; and this is a strong argument to hold fast a profession of faith."  (John Gills Exposition)

"The apostle exhorts believers to hold fast the profession of their faith, v. 23. Here observe, (1.) The duty itself—to hold fast the profession of our faith, to embrace all the truths and ways of the gospel, to get fast hold of them, and to keep that hold against all temptation and opposition. Our spiritual enemies will do what they can to wrest our faith, and hope, and holiness, and comfort, out of our hands, but we must hold fast our religion as our best treasure. (2.) The manner in which we must do this—without wavering, without doubting, without disputing, without dallying with temptation to apostasy. Having once settled these great things between God and our souls, we must be stedfast and immovable. Those who begin to waver in matters of Christian faith and practice are in danger of falling away. (3.) The motive or reason enforcing this duty: He is faithful that hath promised. God has made great and precious promises to believers, and he is a faithful God, true to his word; there is no falseness nor fickleness with him, and there should be none with us. His faithfulness should excite and encourage us to be faithful, and we must depend more upon his promises to us than upon our promises to him, and we must plead with him the promise of grace sufficient."  (Matthew Henry Commentary)