DISCERN THE SPIRITS

Malachi 3:18 New King James Version (NKJV)
18 Then you shall again discern
Between the righteous and the wicked,
Between one who serves God
And one who does not serve Him.

“So give your servant a discerning heart to govern your people and to distinguish between right and wrong…” (1 Kings 3:9).

“But the manifestation of the Spirit is given to each one for the profit of all: for to one is given the word of wisdom through the Spirit, to another the word of knowledge through the same Spirit, to another faith by the same Spirit, to another gifts of healings by the same Spirit, to another the working of miracles, to another prophecy, to another discerning of spirits, to another different kinds of tongues, to another the interpretation of tongues. But one and the same Spirit works all these things, distributing to each one individually as He wills.” (1 Corinthians 12:7-11)
DISCERN verb: catch sight of; recognize and understand

“Beloved, do not believe every spirit, BUT TEST THE SPIRITS, whether they are of God; because many false prophets have gone out into the world.

By this you know the Spirit of God: Every spirit that confesses that Jesus Christ has come in the flesh is of God, and every spirit that does not confess that Jesus Christ has come in the flesh is not of God.

And this is the spirit of the antichrist, which you have heard was coming, and is now already in the world.” (1 John 4:1-4)

“And this is my prayer: that your love may abound more and more in knowledge and depth of insight, so that you may be able to discern what is best and may be pure and blameless for the day of Christ” (Philippians 1:9-10).

Read Hebrews 5:14 Using Other Translations
KJV
But strong meat belongeth to them that are of full age, even those who by reason of use have their senses exercised to discern both good and evil.
ESV
But solid food is for the mature, for those who have their powers of discernment trained by constant practice to distinguish good from evil.
NLT
Solid food is for those who are mature, who through training have the skill to recognize the difference between right and wrong.

Synonyms for discern
anticipate
ascertain
detect
determine
differentiate
discriminate
distinguish
divine
figure out
find out
foresee
perceive
apprehend
behold
descry
discover
espy
extricate
focus
judge
know
note
notice
observe
read
remark
rubberneck
secern
separate
severalize
spot
view
difference
discrepate
get a load of
get the picture
get wise to
make distinction
make out
pick out
see the light
see through
take in