And the LORD appeared unto him the same night, and said, I am the God of Abraham thy father: fear not, for I am with thee, and will bless thee, and multiply thy seed for My servant Abraham’s sake. And he builded an altar there, and called upon the name of the LORD, and pitched his tent there… – Genesis 26:24,25

The Lord bore testimony to Isaac in secret manifestation. He came to him in the watches of the night, and spake with him face to face. None but those who are the blessed of the Lord have such communion with Him. If He manifests Himself to us in this choice manner, it is because He has blessed us in a way in which He would not bless the ungodly world. We find that “(Isaac) builded an altar,” and then he, “pitched his tent.” Keep up the altar of God in your home and keep to the right order-the altar first, and the tent second. When God accepts you there and makes your family altar to be a place of refreshment and delight to you, you will feel that in thus doing He is giving you the sweet assurance that you are now the blessed of the Lord. It is a pity that there are so many houses nowadays without roofs-I mean, houses of Christian people without family prayer. What are some of you at? If your children turn out ungodly, do you wonder at it, seeing that there is no morning and evening prayer, no reading of the Word of God in your home? In every home where the grace of God is known, there should be an altar, from which should rise the incense of praise, and at which the one sacrifice for sin should be pleaded before God day by day. In the midst of such family piety, which I fear is almost dying out in many quarters, you will get the witness, “Thou art now the blessed of the Lord.” ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2238.cfm