The object to which faith is directed, and the ground on which it is based, are both set forth in these two names here applied to God. The name of the Lord is Strength, therefore I wait on Him in the confident expectation of receiving of His power. The Lord is 'my Defence,' therefore I wait on Him in the confident expectation of safety. The one name has respect to our condition of feebleness and inadequacy for our tasks, and points to God as infusing strength into us. The other points to our exposedness to danger and to enemies, and points to God as casting His shelter around us. The word translated 'defence' is literally 'a high fortress,' and is the same as closes the rapturous accumulation of the names of his delivering God, which the Psalmist gives us when he vows to love Jehovah, who has been his Rock, and Fortress, and Deliverer; his God in whom he will trust, his Buckler, and the Horn of his salvation, and his _High Tower_. The first name speaks of God dwelling in us, and His strength made perfect in our weakness; the second speaks of our dwelling in God, and our defencelessness sheltered in Him. 'The name of the Lord is a strong tower; the righteous runneth into it, and is safe.' As some outnumbered army, unable to make head against its enemies in the open, flees to the shelter of some hill fortress, perched upon a crag, and taking up the drawbridge, cannot be reached by anything that has not wings, so this man, hard pressed by his foes, flees into God to hide him, and feels secure behind these strong walls. That is the God on whom we wait. The recognition of His character as thus mighty and ready to help is the only thing that will evoke our expectant confidence, and His character thus discerned is the only object which our confidence can grasp aright. Trust Him as what He is, and trust Him because of what He is, and see to it that your faith lays hold on the living God Himself, and on nothing beside. But waiting on God is not only the recognition of His character as revealed, but it involves, too, the act of laying hold on all the power and blessing of that character for myself. '_My_ strength, _my_ defence,' says the Psalmist. Think of what He is, and believe that He is that for _you_, else there is no true waiting on Him. Make God thy very own by claiming thine own portion in His might, by betaking thyself to that strong habitation. We cannot wait on God in crowds, but one by one, must say, '_My_ strength and _my_ defence.' And now turn to the second verse of our two texts: 'Unto Thee, O my Strength! will I sing, for God is my defence and the God of my mercy.'