Christ encourages fervency and constancy in prayer. We must come for what we need, as a man does to his neighbour or friend, who is kind to him. We must come for bread; for that which is needful. If God does not answer our prayers speedily, yet he will in due time, if we continue to pray.
Observe what to pray for; we must ask for the Holy Spirit, not only as necessary in order to our praying well, but as all spiritual blessings are included in that one. For by the influences of the Holy Spirit we are brought to know God and ourselves, to repent, believe in, and love Christ, and so are made comfortable in this world, and meet for happiness in the next.
All these blessings our heavenly Father is more ready to bestow on every one that asks for them, than an indulgent parent is to give food to a hungry child. And this is the advantage of the prayer of faith, that it quiets and establishes the heart in God.