Mark 11:22
Jesus replied to him, "You should have faith in God.
Mark 9:23
And Jesus said to him, "'If you can.' [Note: By repeating the man's words Jesus seems to be saying, "You mean, if YOU can believe"]. Everything is possible to the person who believes [it can happen]."
John 14:1
[Jesus continued], "Do not allow your hearts to be upset. You should believe in God, and believe in me also.
Colossians 2:12
[This happened when you were] buried with Christ in [the act of] immersion, from which you were also raised up with Him through [your] faith in the accomplishment of God, who raised Him up from the dead.
Titus 1:1
[This letter is from] Paul, a slave of God, and an apostle for [the benefit of] the faith of God's elect [i.e., His chosen people] and [to spread] the knowledge of the truth which leads to godliness,