Here it is;
9 Oh let the wickedness of the wicked come to an end; but establish the just: for the righteous God trieth the hearts and reins.
10 My defence is of God, which saveth the upright in heart.
11 God judgeth the righteous, and God is angry with the wicked every day.
12 If he turn not, he will whet his sword; he hath bent his bow, and made it ready.
13 He hath also prepared for him the instruments of death; he ordaineth his arrows against the persecutors.
14 Behold, he travaileth with iniquity, and hath conceived mischief, and brought forth falsehood.
15 He made a pit, and digged it, and is fallen into the ditch which he made.
16 His mischief shall return upon his own head, and his violent dealing shall come down upon his own pate.
17 I will praise the Lord according to his righteousness: and will sing praise to the name of the Lord most high.
First, you need to quote the entire reference (Psalm 7:11) so one doesn't have to do a search for it regardless of what you post. Do you know how many verses there are in the book of Psalms??
Second, realize this is a psalm, a prayer.
Third, realize that not only is it just a prayer, but an imprecatory psalm or prayer. It is not one that you can base doctrine on. Would you pray this prayer?
How about this one:
Psa 109:5 And they have rewarded me evil for good, and hatred for my love.
Psa 109:6 Set thou a wicked man over him: and let Satan stand at his right hand.
Psa 109:7 When he shall be judged, let him be condemned: and let his prayer become sin.
Psa 109:8 Let his days be few; and let another take his office.
Psa 109:9 Let his children be fatherless, and his wife a widow.
Psa 109:10 Let his children be continually vagabonds, and beg: let them seek their bread also out of their desolate places.
Psa 109:11 Let the extortioner catch all that he hath; and let the strangers spoil his labour.
Psa 109:12 Let there be none to extend mercy unto him: neither let there be any to favour his fatherless children.
Psa 109:13 Let his posterity be cut off; and in the generation following let their name be blotted out.
Psa 109:14 Let the iniquity of his fathers be remembered with the LORD; and let not the sin of his mother be blotted out.
Psa 109:15 Let them be before the LORD continually, that he may cut off the memory of them from the earth.
Psa 109:16 Because that he remembered not to shew mercy, but persecuted the poor and needy man, that he might even slay the broken in heart.
Psa 109:17 As he loved cursing, so let it come unto him: as he delighted not in blessing, so let it be far from him.
Psa 109:18 As he clothed himself with cursing like as with his garment, so let it come into his bowels like water, and like oil into his bones.
This is the OT prophet's depiction of God's judgment.
What does the NT say about our enemies?
Mat 5:43 Ye have heard that it hath been said, Thou shalt love thy neighbour, and hate thine enemy.
Mat 5:44 But I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them which despitefully use you, and persecute you;
Mat 5:45 That ye may be the children of your Father which is in heaven: for he maketh his sun to rise on the evil and on the good, and sendeth rain on the just and on the unjust.
Mat 5:46 For if ye love them which love you, what reward have ye? do not even the publicans the same?
Obviously, your doctrine is not based on NT teaching or the teachings of Jesus. It is taken out of context.