"He that leaves off prayer leaves off the fear of God. ‘You cast off
fear, and restrain prayer before God ‘ (Job 15: 4). A man that
leaves off prayer is capable of any wickedness. When Saul had
given up inquiring of God he went to the witch of Endor" - Thomas Watson

"God has a good deal more to give than most of us are getting.
"Knee-ology" is a much-neglected branch of Christian ethics. The
Church loses immeasurably in strength and accelerated power by
failing to test the wonderful promises of God in prayer. Oh, for
somebody who can really pray. Why need a church languish and
die and have no one converted the year round? Somebody
neglects to pray. Why need a community be without a revival for
years? Somebody neglects to pray. Why need the missionary
cause and current expenses of the church suffer? Somebody
neglects to pray. Why need the church resort to unscriptural
methods to raise money? Somebody neglects to pray. Oh, for a
praying church! Brother, sister, apply this directly to your own
heart. Are you neglecting to pray ?" – C. E. Cornell

"Since the days of Pentecost, has the whole church ever put aside
every other work and waited upon Him for ten days, that the
Spirit’s power might be manifested? We give too much attention to
method and machinery and resources, and too little to the source
of power." -Hudson Taylor

"If I cannot hear 'the sound of rain' long before the rain falls, and
then go out to some hilltop of the Spirit, as near to my God as I
can and have faith to wait there with my face between my knees,
though six times or sixty times I am told 'there is nothing', till at
last there arises a little cloud out of the sea, then I know nothing
of Calvary love." (Read 1 Kings 18:41-45). - Amy Carmichael

"It will never be altogether well with us till we convert the universe
into a prayer room, and continue in the Spirit as we go from place
to place." - George Bowen

"That, which begins not with prayer, seldom winds up with comfort."
- John Flavel

"Oh, that my head were waters, and my eyes a fountain of tears,
that I might weep day and night for the slain of the daughter of my
people!" - Jeremiah 9:1

"Christ was in an agony at prayer (Luke 22: 44). Many when they
pray are rather in a lethargy, than in an agony. When they are
about the world they are all fire; when they are at prayer, they are
all Ice." - Thomas Watson