Matthew 17:20 AMP says :
[20] He answered, “Because of your little faith [your lack of trust and confidence in the power of God]; for I assure you and most solemnly say to you, if you have [living] faith the size of a mustard seed, you will say to this mountain, ‘Move from here to there,’ and [if it is God’s will] it will move; and nothing will be impossible for you. [Mark 11:23; Luke 17:6; 1 John 5:14]

Let’s go in depth in  Hebrews 11:1-11 AMP
[1] Now faith is the assurance (title deed, confirmation) of things hoped for (divinely guaranteed), and the evidence of things not seen [the conviction of their reality—faith comprehends as fact what cannot be experienced by the physical senses]. [2] For by this [kind of] faith the men of old gained [divine] approval. [3] By faith [that is, with an inherent trust and enduring confidence in the power, wisdom and goodness of God] we understand that the worlds (universe, ages) were framed and created [formed, put in order, and equipped for their intended purpose] by the word of God, so that what is seen was not made out of things which are visible. [4] By faith Abel offered to God a more acceptable sacrifice than Cain, through which it was testified of him that he was righteous (upright, in right standing with God), and God testified by accepting his gifts. And though he died, yet through [this act of] faith he still speaks. [Gen 4:3-10] [5] By faith [that pleased God] Enoch was caught up and taken to heaven so that he would not have a glimpse of death; and he was not found because God had taken him; for even before he was taken [to heaven], he received the testimony [still on record] that he had walked with God and pleased Him. [Gen 5:21-24] [6] But without faith it is impossible to [walk with God and] please Him, for whoever comes [near] to God must [necessarily] believe that God exists and that He rewards those who [earnestly and diligently] seek Him. [7] By faith [with confidence in God and His word] Noah, being warned by God about events not yet seen, in reverence prepared an ark for the salvation of his family. By this [act of obedience] he condemned the world and became an heir of the righteousness which comes by faith. [Gen 6:13-22] [8] By faith Abraham, when he was called [by God], obeyed by going to a place which he was to receive as an inheritance; and he went, not knowing where he was going. [9] By faith he lived as a foreigner in the promised land, as in a strange land, living in tents [as nomads] with Isaac and Jacob, who were fellow heirs of the same promise. [Gen 12:1-8] [10] For he was [waiting expectantly and confidently] looking forward to the city which has foundations, [an eternal, heavenly city] whose architect and builder is God. [11] By faith even Sarah herself received the ability to conceive [a child], even [when she was long] past the normal age for it, because she considered Him who had given her the promise to be reliable and true [to His word]. [Gen 17:19; 18:11-14; 21:2]

Let’s Pray  🙏🏽
ALMIGHTY GOD, OUR HEAVENLY FATHER,  I thank you for your steadfast love and enduring faithfulness. I thank you for your grace and mercy. I thank you for your might and power. I thank you for your awesome holiness. I thank you for being you and choosing to reveal yourself to mortals like me. I believe in you, dear Father, and in those times of deepest struggle, I still believe but ask for your grace and help to overcome my unbelief. Through Jesus, your final Word, I believe and pray.

Heavenly Father, I realise how quickly and easily I can move from trusting You to doubting Your Word, when things do not go the way that I expect. I pray that like the men and women of faith in Hebrews, my trust in You will not falter. Help me to earnestly seek You day by day, for I know that only as Christ lives in and through me, by faith, can I be pleasing in Your sight. IN JESUS ’ OMNIPOTENT NAME,WHICH IS ABOVE, EVERY OTHER NAME.  AMEN 🙏 .

Ephesians 3:20-21 AMP
[20] Now to Him who is able to [carry out His purpose and] do superabundantly more than all that we dare ask or think [infinitely beyond our greatest prayers, hopes, or dreams], according to His power that is at work within us, [21] to Him be the glory in the church and in Christ Jesus throughout all generations forever and ever. Amen.