Proverbs 25:19

A bad tooth and a lame foot [is] the trust of a faithless person {in a time} of trouble.

Isaiah 36:6

Look, you trust in the staff of this broken reed, on Egypt, which [if] a man leans on it, goes into his hand and bores through it! Such [is] Pharaoh, king of Egypt, to all those who trust in him.

2 Chronicles 28:20-21

Then Tiglath-Pileser the king of Assyria came against him and brought trouble for him, {instead of helping him},

Job 6:14-20

"Loyal love [should come] for the afflicted [from] his friend, even if he forsakes the fear of Shaddai.

Isaiah 30:1-3

"Oh rebellious children!" {declares} Yahweh, "to make a plan, but not from me, and pour out a libation, but not [from] my Spirit, {so as to add} sin to sin.

Ezekiel 29:6-7

And all of the inhabitants of Egypt will know that I [am] Yahweh, because of their being a staff of reed for the house of Israel.

2 Timothy 4:16

At my first defense, no one came to my [aid], but [they] all deserted me; may it not be counted against them.

Treasury of Scripture Knowledge

Summary

Confidence in an unfaithful man in time of trouble is like a broken tooth, and a foot out of joint.

Bible References

General references

2 Chronicles 28:20
Then Tiglath-Pileser the king of Assyria came against him and brought trouble for him, {instead of helping him},
Job 6:14
"Loyal love [should come] for the afflicted [from] his friend, even if he forsakes the fear of Shaddai.
Isaiah 30:1
"Oh rebellious children!" {declares} Yahweh, "to make a plan, but not from me, and pour out a libation, but not [from] my Spirit, {so as to add} sin to sin.
Isaiah 36:6
Look, you trust in the staff of this broken reed, on Egypt, which [if] a man leans on it, goes into his hand and bores through it! Such [is] Pharaoh, king of Egypt, to all those who trust in him.
Ezekiel 29:6
And all of the inhabitants of Egypt will know that I [am] Yahweh, because of their being a staff of reed for the house of Israel.
2 Timothy 4:16
At my first defense, no one came to my [aid], but [they] all deserted me; may it not be counted against them.