Then, still further, these words, or rather one portion of them, give us a bright light and a beautiful thought as to the _essence_ and inmost centre of this faith or trust. Scholars tell us that the word here translated 'trust' has a graphic, pictorial meaning for its root idea. It signifies literally to cling to or hold fast anything, expressing thus both the notion of a good tight grip and of intimate union. Now, is not that metaphor vivid and full of teaching as well as of impulse? 'I will trust in Thee.' 'And he exhorted them all, that with purpose of heart they should _cleave_ unto the Lord.' We may follow out the metaphor of the word in many illustrations. For instance, here is a strong prop, and here is the trailing, lithe feebleness of the vine. Gather up the leaves that are creeping all along the ground, and coil them around that support, and up they go straight towards the heavens. Here is a limpet in some pond or other, left by the tide, and it has relaxed its grasp a little. Touch it with your finger and it grips fast to the rock, and you will want a hammer before you can dislodge it. There is a traveller groping along some narrow broken path, where the chamois would tread cautiously, his guide in front of him. His head reels, and his limbs tremble, and he is all but over, but he grasps the strong hand of the man in front of him, or lashes himself to him by the rope, and he can walk steadily. Or, take that story in the Acts of the Apostles, about the lame man healed by Peter and John. All his life long he had been lame, and when at last healing comes, one can fancy with what a tight grasp 'the lame man held Peter and John.' The timidity and helplessness of a lifetime made him hold fast, even while, walking and leaping, he tried how the unaccustomed 'feet and ankle bones' could do their work. How he would clutch the arms of his two supporters, and feel himself firm and safe only as long as he grasped them! That is faith, cleaving to Christ, twining round Him with all the tendrils of our heart, as the vine does round its pole; holding to Him by His hand, as a tottering man does by the strong hand that upholds.