To fully understand God we must first understand His holiness.
2 Cor 5:21 For He hath made Him to be sin for us, Who knew no sin; that we might be made the righteousness of God in Him.
Is 6:3 And one cried to another, and said, Holy, holy, holy, is the Lord of hosts: the whole earth is full of His glory.
Rev 4:8 And the four beasts had each of them si wings about him; and they were full of eyes within: and they rest not day and night, saying, Holy, holy, holy, Lord God Almighty, which was, and is, and is to come.
How important to God holiness is!
Heb 12:14 Follow peace with all men, and holiness, without which no man shall see the Lord.
Ps 11:7 For the righteous Lord loveth righteousness; His countenance doth behold the upright.
Pr 23:17 Let not thine heart eny sinners; but be thou in the fear of the Lord all the day long.
If we stay in the fear of the Lord all day, we will remain holy in our thoughts, words and actions.
Deut 10:12 And now, Israel, what doth the Lord thy God, require of thee, but to fear the Lord thy God, to walk in all His ways, and to love Him, and to serve the Lord thy God with all thy heart and with all thy soul.
:13 To keep the commandments of the Lord, and His statutes, which I command thee this day for thy good?
Notice the first thing mentioned is to fear the Lord? And we are told to do these things with all our heart and all our soul. If we do that we will be walking in holiness.