For look, the wicked bend their bows; they set their arrows against the strings to shoot from the shadows at the upright in heart. (NIV)
For see, the wicked are bending the bow; they make ready their arrow upon the string, that they [furtively] in darkness may shoot at the upright in heart. (AMP)
For, lo, the wicked bend their bow, they make ready their arrow upon the string, that they may privily shoot at the upright in heart. (KJV)