Psalms 114:7-8

Here, the answer is given. As Sinai moved at God's presence, so mountains of sin, nations of idolatry, Satan, and all the powers of darkness, fall away beneath the sovereignty of Jesus, and his gospel. Yea, the very stony hearts of the most hardened transgressors, must become hearts of flesh, and every power of nature must bend to the power of his grace. When the eye is directed by sovereign love to Jesus, looking unto him whom they have pierced, they must mourn, and the waters of repentance shall gush out; Zechariah 12:10.