Man is so constituted that, in some respects, he must have objects outside of himself to lean upon. As a child, he leans upon a wisdom and strength which is superior to his own, and few men are so self-sufficient as entirely to lay aside this habit in after life. In many things we must, whether we will or not, depend upon the guidance and help of others. Every man, in common with the lower creatures, must of necessity lean upon a power greater than his own. "The eyes of all wait upon Thee" (Psa. cxlv. 15). But this is a leaning which needs no exhortation: it springs from necessity. The exhortation of the text implies that in some things men have to choose whether they will lean upon God or not. +I. What is necessary in order to comply with the exhortation.+ 1. _A knowledge of God._ We cannot place entire trust in any person of whose character we have no knowledge; or, if we do so, we show our want of discretion. If a traveller across Central Africa were to give himself up to the guidance of the first native whom he met, he would probably find that his confidence had been misplaced. The youth who trusts in the first companion who offers his friendship is like a blind man placing his hand in that of any stranger who may offer him guidance. All lasting trust is based upon knowledge. "They that _know_ Thy name will put their trust in Thee" (Psa. ix. 10). The confidence of a wise man is born of knowledge of character. God can be known. His only-begotten Son hath declared Him (Luke x. 22; John i. 18, xvii. 3). 2. _Love to God._ The character must be known, and, being known, must be loved, if there is to be a lasting confidence. We shall not lean with much weight where we do not love. The trust of a Christian will be in proportion to his love to his Lord. The more intimate the knowledge, the deeper will be the love; the deeper the love, the more entire the trust. Our Lord Jesus Christ knew His Father (John xvii. 25) as no creature could know Him, and His love being based upon this profound knowledge, His trust was entire and His obedience perfect, even in His darkest hours. "But that the world may know that I love the Father, and as the Father gave me commandment, even so I do." "_Arise let us go hence_" (John xiv. 31). We cannot do better than write after this copy.