Psalms 55:6

And I said, Oh that I had wings like a dove! [for then] would I fly away, and be at rest.

Ver. 6. And I said, Oh that I had wings like a dove!] Ut citissime et longissime fugerem, that I might swiftly fly far off from Absalom's pursuers; as the dove saveth herself by fight, and not by fight, scoureth away to the rocks and deserts, Jeremiah 48:28. Many souls are swifter of flight than doves; but these hold out better. R. Jonah saith, that whereas other birds, when they are wearied with flying, do rest them upon rocks or trees, and are taken; the dove doth not so, but letteth down one wing, and flieth with the other, and thereby escapeth the pursuer (R. Jonah, apud Kimchi).

For then would I fly away] But whither he saith not, because he knew not. The Church in the Revelation fled into the wilderness, Rev 12:6 God provided a Pella for those primitive Christians. Luther, being asked where he would be at quiet from his enemies? answered, Sub coelo, under heave, somewhere God would secure him.