Faith

And not being weak in faith, he did not consider his own body, already dead (since he was about a hundred years old), and the deadness of Sarah’s womb. He did not waver at the promise of God through unbelief, but was strengthened in faith, giving glory to God, and being fully convinced that what He had promised He was also able to perform. - Romans 4:19–21

Let us hold fast the confession of our hope without wavering, for He who promised is faithful. - Hebrews 10:23

By faith Sarah herself also received strength to conceive seed, and she bore a child when she was past the age, because she judged Him faithful who had promised. - Hebrews 11:11

Now faith is the substance of things hoped for, the evidence of things not seen. - Hebrews 11:1

So shall My word be that goes forth from My mouth; it shall not return to Me void, but it shall accomplish what I please, and it shall prosper in the thing for which I sent it. - Isaiah 55:11

God is not a man, that He should lie, nor a son of man, that He should repent. Has He said, and will He not do? Or has He spoken, and will He not make it good? -Numbers 23:19

Forever, O Lord, Your word is settled in heaven. - Psalm 119:89

Blessed be the Lord, who has given rest to His people Israel, according to all that He promised. There has not failed one word of all His good promise, which He promised through His servant Moses. - 1 Kings 8:56

For assuredly, I say to you, whoever says to this mountain, ‘Be removed and be cast into the sea,’ and does not doubt in his heart, but believes that those things he says will be done, he will have whatever he says. - Mark 11:23

Therefore I say to you, whatever things you ask when you pray, believe that you receive them, and you will have them. - Mark 11:24

For we walk by faith, not by sight. - 2 Corinthians 5:7

For in Christ Jesus neither circumcision nor uncircumcision avails anything, but faith working through love. - Galatians 5:6

… God, who gives life to the dead and calls those things which do not exist as though they did… - Romans 4:17

Jesus Christ is the same yesterday, today, and forever. - Hebrews 13:8

For the time would fail me to tell of Gideon and Barak and Samson and Jephthah, also of David and Samuel and the prophets: who through faith subdued kingdoms, worked righteousness, obtained promises, stopped the mouths of lions, quenched the violence of fire, escaped the edge of the sword, out of weakness were made strong, became valiant in battle, turned to flight the armies of the aliens. - Hebrews 11:32–34