John 7:38

Out of his belly shall flow rivers of living water. By this living water, are signified the gifts of the Holy Ghost, which were promised to the faithful. (Witham)

4. A gracious promise annexed to this gracious call (v. 38): He that believeth on me, out of his belly shall flow—(1.) See here what it is to come to Christ: It is to believe on him, as the scripture hath said; it is to receive and entertain him as he is offered to us in the gospel. We must not frame a Christ according to our fancy, but believe in a Christ according to the scripture. (2.) See how thirsty souls, that come to Christ, shall be made to drink. Israel, that believed Moses, drank of the rock that followed them, the streams followed; but believers drink of a rock in them, Christ in them; he is in them a well of living water, ch. 4 14. Provision is made not only for their present satisfaction, but for their continual perpetual comfort. Here is, [1.] Living water, running water, which the Hebrew language calls living, because still in motion. The graces and comforts of the Spirit are compared to living (meaning running) water, because they are the active quickening principles of spiritual life, and the earnests and beginnings of eternal life. See Jer 2 13. [2.] Rivers of living water, denoting both plenty and constancy. The comfort flows in both plentifully and constantly as a river; strong as a stream to bear down the oppositions of doubts and fears. There is a fulness in Christ of grace for grace. [3.] These flow out of his belly, that is, out of his heart or soul, which is the subject of the Spirit's working and the seat of his government. There gracious principles are planted; and out of the heart, in which the Spirit dwells, flow the issues of life, Prov 4 23. There divine comforts are lodged, and the joy that a stranger doth not intermeddle with. He that believes has the witness in himself, 1 John 5 10. Sat lucis intus—Light abounds within. Observe, further, where there are springs of grace and comfort in the soul that will send forth streams: Out of his belly shall flow rivers. First, Grace and comfort will produce good actions, and a holy heart will be seen in a holy life; the tree is known by its fruits, and the fountain by its streams. Secondly, They will communicate themselves for the benefit of others; a good man is a common good. His mouth is a well of life, Prov 10 11. It is not enough that we drink waters out of our own cistern, that we ourselves take the comfort of the grace given us, but we must let our fountains be dispersed abroad, Prov 5 15, 16.

I. Christ's discourse, with the explication of it, v. 37-39. It is probable that these are only short hints of what he enlarged upon, but they have in them the substance of the whole gospel; here is a gospel invitation to come to Christ, and a gospel promise of comfort and happiness in him. Now observe,

Verses 37-39 On the last day of the feast of tabernacles, the Jews drew water and poured it out before the Lord. It is supposed that Christ alluded to this. If any man desires to be truly and for ever happy, let him apply to Christ, and be ruled by him. This thirst means strong desires after spiritual blessings, which nothing else can satisfy; so the sanctifying and comforting influences of the Holy Spirit, were intended by the waters which Jesus called on them to come to Him and drink. The comfort flows plentifully and constantly as a river; strong as a stream to bear down the opposition of doubts and fears. There is a fulness in Christ, of grace for grace. The Spirit dwelling and working in believers, is as a fountain of living, running water, out of which plentiful streams flow, cooling and cleansing as water. The miraculous gifts of the Holy Spirit we do not expect, but for his more common and more valuable influences we may apply. These streams have flowed from our glorified Redeemer, down to this age, and to the remote corners of the earth. May we be anxious to make them known to others.