New Revised Standard Version
Why should I fear in times of trouble, when the iniquity of my persecutors surrounds me,

Contemporary English Version
Why should I be afraid in times of trouble, when I am surrounded by vicious enemies?

New American Bible
Why should I fear in evil days, with the iniquity of my assailants surrounding me,

Douay-Rheims Bible
Why shall I fear in the evil day? the iniquity of my heel shall encompass me.

Why shall I fear in the evil day? the iniquity of my heel shall encompass me.

Wherefore

Psalm 27:1,2 The psalm of David before he was anointed. The Lord is my light and my salvation, whom shall I fear? The Lord is the protector of my life: of whom shall I be afraid? . . .

Psalm 46:1,2 Unto the end, for the sons of Core, for the hidden. [2] Our God is our refuge and strength: a helper in troubles, which have found us exceedingly. . . .

Isaiah 41:10,11 Fear not, for I am with thee: turn not aside, for I am thy God: I have strengthened thee, and have helped thee, and the right hand of my just one hath upheld thee. . . .

Acts 27:24 Saying: Fear not, Paul, thou must be brought before Caesar; and behold, God hath given thee all them that sail with thee.

Romans 8:33,34 Who shall accuse against the elect of God? God is he that justifieth: . . .

Philippians 1:28 And in nothing be ye terrified by the adversaries: which to them is a cause of perdition, but to you of salvation, and this from God.

days

Proverbs 24:10 If thou lose hope, being weary in the day of distress, thy strength shall be diminished.

Amos 5:13 Therefore the prudent shall keep silence at that time, for it is an evil time.

Ephesians 5:16 But as wise: redeeming the time, because the days are evil.

iniquity

Psalm 38:4 For my iniquities are gone over my head: and as a heavy burden are become heavy upon me.

Proverbs 5:22 He shall die, because he hath not received instruction, and in the multitude of his folly he shall be deceived.

Hosea 7:2 And lest they may say in their hearts, that I remember all their wickedness: their own devices now have beset them about, they have been done before my face.

heels

Proverbs 22:16 He that oppresseth the poor, to increase his own riches, shall himself give to one that is richer, and shall be in need.

Genesis 49:17 Let Dan be a snake in the way, a serpent in the path, that biteth the horse's heels, that his rider may fall backward.

1 Samuel 26:20 And now let not my blood be shed upon the earth before the Lord: for the king of Israel is come out to seek a flea, as the partridge is hunted in the mountains.