Luke 21:15

for I will make you speak with such strength of argument, as all your adversaries shall not be able to contradict or withstand.

Ephesians 6:19

in particular for me, that I may have leave to speak without any restraint, and make known the mystery of the gospel,

Treasury of Scripture Knowledge

Summary

In that day shall thy mouth be opened to him which is escaped, and thou shalt speak, and be no more dumb: and thou shalt be a sign unto them; and they shall know that I am the LORD.

Bible References

Thy

Luke 21:15
for I will make you speak with such strength of argument, as all your adversaries shall not be able to contradict or withstand.
Ephesians 6:19
in particular for me, that I may have leave to speak without any restraint, and make known the mystery of the gospel,