Believing

“May the God of hope fill you with all joy and peace in believing, so that by the power of the Holy Spirit you may abound in hope.” (Rom. 15:13 ESV)

By believing you may have life in His Name

“But these are written so that you may believe that Jesus is the Christ, the Son of God, and that by believing you may have life in his name.” (John 20:31 ESV)

“And they said, “Believe in the Lord Jesus, and you will be saved, you and your household.” (Acts 16:31 ESV)

“Truly, truly, I say to you, whoever hears my word and believes him who sent me has eternal life. He does not come into judgment, but has passed from death to life.” (John 5:24 ESV) 

“For God so loved the world, that he gave his only Son, that whoever believes in him should not perish but have eternal life.” (John 3:16 ESV)

“But to all who did receive him, who believed in his name, he gave the right to become children of God…” (John 1:12 ESV)

Therefore…

“If you declare with your mouth, "Jesus is Lord," and believe in your heart that God raised him from the dead, you will be saved.” (John 19:9 NIV)

Quote:

“We should inquire once again as to what the life of faith is. It is one lived by believing God under any circumstance: "If he slay me," says Job, "yet would I trust in Him" (Job 13:15 Darby). That is faith.” - Watchman Nee