1 Corinthians 1:8-9

And He will establish you to the end [keep you steadfast, give you strength, and guarantee your vindication; He will be your warrant against all accusation or indictment so that you will be] guiltless and irreproachable in the day of our Lord Jesus Christ (the Messiah). God is faithful (reliable, trustworthy, and therefore ever true to His promise, and He can be depended on); by Him you were called into companionship and participation with His Son, Jesus Christ our Lord.