God is faithful
“What then? If some did not believe, their unbelief will not nullify the faithfulness of God, will it?” (Rom. 3:3 ESV)
He remains faithful and true
Occasionally, someone will tell me they do not want to be a Christian because of bad examples. They talk about famous preachers who have failed publicly, religious hypocrites, or others they have known who did not behave in a “Christian” manner. When they tell me this, I always say, “Yes, what you say may be so, but don’t let it stand in the way of your own personal relationship with Christ, because He always remains faithful and true!”
Always faithful
“If we are faithless, he remains faithful— for he cannot deny himself.” (2 Tim. 2:13 ESV)
To a thousand generations
“Know therefore that the Lord your God is God, the faithful God who keeps covenant and steadfast love with those who love him and keep his commandments, to a thousand generations.” (Deut. 7:9 ESV)
Therefore
“God is faithful, who has called you into fellowship with his Son, Jesus Christ our Lord.” (1 Cor 1:9)
“Let us hold fast the confession of our hope without wavering, for he who promised is faithful.” (Heb. 10:23 ESV)
“If we confess our sins, he is faithful and just to forgive us our sins and to cleanse us from all unrighteousness.” (1 John 1:9 ESV)