For ye have not received the spirit of bondage again to fear; but ye have received the Spirit of adoption, whereby we cry, Abba, Father. – Romans 8:14

And what is “the spirit of adoption, whereby we cry Abba, Father?” I cannot tell you; but if you have felt it you will know it. It is a sweet compound of faith that knows God to be my Father, love that loves Him as my Father, joy that rejoices in Him as my Father, fear that trembles to disobey Him because He is my Father and a confident affection and trustfulness that relies upon Him, and casts itself wholly upon Him, because it knows by the infallible witness of the Holy Spirit, that Jehovah, the God of earth and heaven, is the Father of my heart. Oh! have you ever felt the spirit of adoption? There is nought like it beneath the sky. Save heaven itself there is nought more blissful than to enjoy that spirit of adoption. Oh! when the wind of trouble is blowing and waves of adversity are rising, and the ship is reeling to the rock how sweet then to say “My Father,” and to believe that His strong hand is on the helm!-when the bones are aching, and when the loins are filled with pain, and when the cup is brimming with wormwood and gall, to say “My Father,” and seeing that Father’s hand holding the cup to the lip, to drink it steadily to the very dregs because we can say, “My Father, not my will, but Thine be done.”  “My Father!” Oh! there is music there; there is eloquence there; there is the very essence of heaven’s own bliss in that word, ” My Father,” when applied to God, and when said by us with an unfaltering tongue, through the inspiration of the Spirit of the living God.~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0213.cfm