Beware, I pray thee, of ...

Beware, I pray thee, of presuming that thou art saved. If thy heart be renewed, if thou shalt hate the things that thou didst once love, and love the things that thou didst once hate; if thou hast really repented; if there be a thorough change of mind in thee; if thou be born again, then hast thou reason to rejoice: but if there be no vital change, no inward godliness; if there be no love to God, no prayer, no work of the Holy Spirit, then thy saying \
Beware, I pray thee, of presuming that thou art saved. If thy heart be renewed, if thou shalt hate the things that thou didst once love, and love the things that thou didst once hate; if thou hast really repented; if there be a thorough change of mind in thee; if thou be born again, then hast thou reason to rejoice: but if there be no vital change, no inward godliness; if there be no love to God, no prayer, no work of the Holy Spirit, then thy saying "I am saved" is but thine own assertion, and it may delude, but it will not deliver thee.
 Charles Spurgeon

Quotes from the same author

Wisdom is the right use of knowledge. To know is not to be wise. Many men know a great deal and are all the greater fools for it. There is no fool so great a fool as a knowing fool. But to know how to use knowledge is to have wisdom.
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 Charles Spurgeon
Nothing puts life into men like a dying Savior.
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 Charles Spurgeon
Prayer plumes the wings of God's young eaglets so that they may learn to mount above the clouds. Prayer brings inner strength to God's warriors and sends them forth to spiritual battle with their muscles firm and their armor in place.
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 Charles Spurgeon
We are foolish to expect to serve God without opposition: the more zealous we are, the more sure are we to be assailed... Glory be to God, we know the end of the war. The great dragon shall be cast out and for ever destroyed, while Jesus and they who are with him shall receive the crown. Let us sharpen our swords to-night, and pray the Holy Spirit to nerve our arms for the conflict. Never battle so important, never crown so glorious. Every man to his post, ye warriors of the cross, and may the Lord tread Satan under your feet shortly!
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 Charles Spurgeon
Unbelief is the mother of vice; it is the parent of sin; and, therefore, I say it is a pestilent evil-a master sin.
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 Charles Spurgeon