This is the only verse in the New Testament describing the Creator as faithful. God had a very specific purpose in creating the universe and especially man, and He will surely accomplish that great purpose.
The Scriptures repeatedly stress God's faithfulness. With respect to the physical universe, "For ever, O Lord, thy word is settled in heaven. Thy faithfulness is unto all generations: thou hast established the earth, and it abideth" (Psalm 119:89-90). As far as His promises to His people are concerned, "Know therefore that the Lord thy God, He is God, the faithful God, which keepeth covenant and mercy with them that love Him and keep His commandments to a thousand generations" (Deuteronomy 7:9).
The faithful Creator is none other than the Lord Jesus Christ, and He rebukes the compromising church of the last days with these majestic words: "These things saith the Amen, the faithful and true witness, the beginning of the creation of God" (Revelation 3:14). Although many professing believers will prove unfaithful to Him, "yet He abideth faithful: He cannot deny Himself" (II Timothy 2:13).
The triumphant book of Revelation comes directly "from Jesus Christ, who is the faithful witness" (Revelation 1:5); and when He finally returns to earth in power and glory, His very name shall be "called Faithful and True" (Revelation 19:11). He is both Alpha and Omega, and thus all His "words are true and faithful" (Revelation 21:5). Our salvation is sure therefore because "God is faithful, by whom ye were called unto the fellowship of His Son Jesus Christ our Lord" (I Corinthians 1:9). "Faithful is He that calleth you, who also will do it" (I Thessalonians 5:24). HMM