He called for a light - That he might see how things stood, and whether the words of Paul were true; for on this his personal safety depended.

Came trembling - Terrified by the earthquake, and feeling the danger to which his own life was exposed.

Fell down before Paul and Silas - The persons whom a few hours before he, according to his office, treated with so much asperity, if not cruelty, as some have supposed; though, by the way, it does not appear that he exceeded his orders in his treatment of the apostles.

and came.

Acts 9:5,6 And he said, Who are you, Lord? And the Lord said, I am Jesus whom you persecute: it is hard for you to kick against the pricks...

Acts 24:25 And as he reasoned of righteousness, temperance, and judgment to come, Felix trembled, and answered, Go your way for this time...

Psalm 99:1 The LORD reigns; let the people tremble: he sits between the cherubim; let the earth be moved.

Psalm 119:120 My flesh trembles for fear of you; and I am afraid of your judgments.

Isaiah 66:2,5 For all those things has my hand made, and all those things have been, said the LORD: but to this man will I look...

Jeremiah 5:22 Fear you not me? said the LORD: will you not tremble at my presence...

Jeremiah 10:10 But the LORD is the true God, he is the living God, and an everlasting king: at his wrath the earth shall tremble...

Daniel 6:26 I make a decree, That in every dominion of my kingdom men tremble and fear before the God of Daniel: for he is the living God...

and fell.

Isaiah 60:14 The sons also of them that afflicted you shall come bending to you...

Revelation 3:9 Behold, I will make them of the synagogue of Satan, which say they are Jews, and are not, but do lie; behold...

The Great Question and the Plain Answer
'He brought them out, and said, Sirs, what must I do to be saved? 31. And they said, Believe on the Lord Jesus Christ, and thou shall be saved.'--ACTS xvi. 30, 31. The keeper of a Macedonian jail was not likely to be a very nervous or susceptible person. And so the extraordinary state of agitation and panic into which this rough jailer was cast needs some kind of explanation. There had been, as you will all remember, an earthquake of a strange kind, for it not only opened the prison doors, but shook …
Alexander Maclaren—Expositions of Holy Scripture: The Acts

Measures to Promote Revivals.
Text.--These men, being Jews, do exceedingly trouble our city and teach customs which are not lawful for us to receive, neither to observe, being Romans.--Acts xvi. 20, 21. "THESE men," here spoken of, were Paul and Silas, who went to Philippi to preach the Gospel, and very much disturbed the people of that city, because they supposed the preaching would interfere with their worldly gains. And so they arranged the preachers of the Gospel before the magistrates of the city, as culprits, and charged …
Charles Grandison Finney—Lectures on Revivals of Religion

The Missionary on the Sea Shore.
"And a vision appeared to Paul in the night: There stood a man of Macedonia and prayed him saying, Come over into Macedonia, and help us."--Acts 16:9. "Wei schaumt so feierlich zu unsern Fuessen." [65]F. de la Motte Fouque. transl., Jane Borthwick, 1858 Dark mighty Ocean, rolling to our feet! In thy low murmur many voices meet, The sound of distant lands brought strangely near To Fancy's ear. From shores unknown comes the sweet Sabbath bell, New languages the old glad tidings tell, We hear the …
Jane Borthwick—Hymns from the Land of Luther