From BiblePortal Wikipedia

King James Dictionary [1]

Secu'Rely, adv.

1. Without danger safely as, to pass a river on ice securely. But safely is generally used. 2. Without fear or apprehension carelessly in an unguarded state in confidence of safety.

His daring foe securely him defied. Milton.

Devise not evil against thy neighbor, seeing he dwelleth securely by thee.  Proverbs 3 .

Webster's Dictionary [2]

(adv.) In a secure manner; without fear or apprehension; without danger; safely.