His Enemies Cannot Shake Or Unsettle Him From His Throne

"But if God is the object of our love, we should share in his infinite happiness without contamination or the possibility of it being diminished. We should constantly rejoice in beholding the glory of God and receive comfort and pleasure from all the praises with which men and angels extol him. It should delight us beyond all expression to consider that the one who is beloved in our own souls is infinitely happy in himself and that all his enemies cannot shake or unsettle him from his throne. What a sure foundation does the soul have whose happiness is built on divine love, whose will is transformed into the will of God, and whose greatest desire is that his Maker should be pleased. Oh, the peace, the rest, the satisfaction that comes from such an attitude of mind!" (Henry Scougal, in Robin Taylor, ed., The Life Of God In The Soul Of Man [Wheaton, Illinois: Crossway, 2022], approximate Kindle location 466)

Not How Good They Were, But The Glory Of Their Savior

"You will never be bold for Jesus if you wait to get good. And the whole thing that drove the early church and made them lion-hearted was not how good they were, but the glory of their Savior, the glory of the righteousness of Jesus." (John Piper, 24:54 in the audio here)