And the Lord said to Moses: Pharao's heart is hardened, he will not let the people go.

Pharaoh's

Exodus 8:15 And Pharao seeing that rest was given, hardened his own heart, and did not hear them, as the Lord had commanded.

Exodus 10:1,20,27 And the Lord said to Moses: Go in to Pharao; for I have hardened his heart, and the heart of his servants: that I may work these my signs in him, . . .

Zechariah 7:12 And they made their heart as the adamant stone, lest they should hear the law, and the words which the Lord of hosts sent in his spirit by the hand of the former prophets: so a great indignation came from Lord of hosts.

he refuseth

Exodus 4:23 I have said to thee: Let my son go, that he may serve me, and thou wouldst not let him go: behold I will kill thy son, thy firstborn.

Exodus 8:2 But if thou wilt not let them go, behold I will strike all thy coasts with frogs.

Exodus 9:2 But if thou refuse, and withhold them still:

Exodus 10:4 But if thou resist, and wilt not let them go, behold I will bring in to-morrow the locusts into thy coasts;

Isaiah 1:20 But if you will not, and will provoke me to wrath: the sword shall devour you because the mouth of the Lord hath spoken it.

Jeremiah 8:5 Why then is this people in Jerusalem turned away with a stubborn revolting? they have laid hold on lying, and have refused to return.

Jeremiah 9:6 Thy habitation is in the midst of deceit: through deceit they have refused to know me, saith the Lord.

Hebrews 12:25 See that you refuse him not that speaketh. For if they escaped not who refused him that spoke upon earth, much more shall not we that turn away from him that speaketh to us from heaven.