When we have faith in God and His Son, be assured that God is working in us what is well-pleasing in His sight through Jesus Christ, "the author and finisher of our faith" (Hebrews 12:2). "But without faith, it is impossible to please Him, for he who comes to God must believe that He is, and that He is a rewarder of those who diligently seek Him" (Hebrews 11:6).
God is the one who gives us faith. It is by the grace of God that we are enabled to live by faith. "For by grace are you saved through faith, and that not of yourselves; it is the gift of God"(Ephesians 2:8). It's all of grace as the gift of God.
Faith abides in us, as a gift of the Holy Spirit (1 Corinthians 13:13). The gift of faith is from God the Father, through the work of the Holy Spirit in our hearts. It is anchored to the gospel of our Lord Jesus Christ, who died for our sins and was raised from the dead. The Spirit of grace enables us to believe the gospel of Christ.
The gift of faith is not just mental assent nor human effort. It is a result of the Holy Spirit bringing us to a point of confidence, assurance, and trust in the living Christ. It's faith that the world didn't give us, and the world can't take it away. Faith pleases God, the very gift of faith that He works in us. "For it is God who works in you both to will and to do for His good pleasure" (Philippians 2:13).