THE sponge, as it expands in its native seas, is in the clear warm water; and the water is in it. Thus there is a double In-ness between the Lord and the soul that loves Him. He is in the believer, as the sap is in the vine, and the spirit of energetic life in the body. But, in a very deep and blessed sense, the believer is in Christ. Of each of these sides of this marvellous truth there are many illustrations in this Epistle, so specially devoted to the study of the preposition in. We are dealing now with those passages only that assure us, as believers, of being in the Beloved.