Grace and peace be multiplied unto you through the knowledge of God, and of Jesus our Lord… – 2 Peter 1:2

Peter wished to see this divine life in a healthy and vigorous state, and therefore he prays that grace and peace may be multiplied. Divine power is the foundation of this life; grace is the food it feeds upon, and peace is the element in which it lives most healthily. Give a Christian much grace, and his spiritual life will be like the life of a man who is well clothed and nurtured; keep the spiritual life without abundant grace, and it becomes lean, faint, and ready to die; and though die it cannot, yet will it seem as though it gave up the ghost, unless fresh grace be bestowed. Peace, I say, is the element in which it flourishes most. Let a Christian be much disturbed in mind, let earthly cares get into his soul, let him have doubts and fears as to his eternal safety, let him lose a sense of reconciliation to God, let his adoption be but dimly before his eyes, and you will not see much of the divine life within him. But oh! if God shall smile upon the life within you, and you get much grace from God, and your soul dwells much in the balmy air of heavenly peace, then shall you be strong to exercise yourself unto godliness, and your whole life shall adorn the doctrine of God your Saviour.

Wherever true faith enters, though it be into the heart of a harlot or of a thief, what a change it makes! …I say, we boast of nothing which we now are, for by the grace of God we are what we are, yet the change is something to be wondered at. Has divine grace wrought this change in you? ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0551.cfm