God is spirit, and those who worship him must worship in spirit and truth."
      b. Therefore he shall never thirst, because this water that Christ gives shall be in him a well of water. He can never be reduced to extremity that has in himself a fountain of supply and satisfaction. (a.) Ever ready, for it shall be in him. The principle of grace planted in him is the spring of his comfort; see John 7:38; John 7:38. A good man is satisfied from himself, for Christ dwells in his heart. The anointing abides in him; he needs not sneak to the world for comfort; the work and the witness of the Spirit in the heart furnish him with a firm foundation of hope and an overflowing fountain of joy. (b.) Never failing, for it shall be in him a well of water. He that has at hand only a bucket of water needs not thirst as long as this lasts, but it will soon be exhausted; but believers have in them a well of water, overflowing, ever flowing. The principles and affections which Christ's holy religion forms in the souls of those that are brought under the power of it are this well of water. [a.] It is springing up, ever in motion, which bespeaks the actings of grace strong and vigorous. If good truths stagnate in our souls, like standing water, they do not answer the end of our receiving them. If there be a good treasure in the heart, we must thence bring forth good things. [b.] It is springing up unto everlasting life; which intimates, First, The aims of gracious actings. A sanctified soul has its eye upon heaven, means this, designs this, does all for this, will take up with nothing short of this. Spiritual life springs up towards its own perfection in eternal life. Secondly, The constancy of those actings; it will continue springing up till it come to perfection. Thirdly, The crown of them, eternal life at last. The living water rises from heaven, and therefore rises towards heaven; see Ecclesiastes 1:7. And now is not this water better than that of Jacob's well?