The book of Jasjer, and Enoch are mentions in the Bible, Peter talks of it and our Messiah also.

About Henoch in the Bible :

Hebrew's 11:15. Genesis 5-18-24. Lukas :3:37. 

It telss us about the things before the floot and what is to come again. It tells us about the tru calendar, the callender of the heavens of our lord and saver Jesus Christ. Thes books are a blessing to me, and i hope to you also it opens the heavely understanding and you'r communion whit our Lord. It is not nessesary to keep these feasts literly, becouce they are spiritual. But is nice to remember them and keep them in mind. Read also  2 collossians 2:16-23. The are a forshadow of the things to come.

Profecy is a blessing from God becouse we can prepare our walk whit Him before He relaeses the jugments on the earth. So repent and live holy.

Al about sinn

Let nothing stay in the way of you and your savior. Sin is a divider and it blocks you're entry in heaven  it is a doorway to the darkness. close every open door and be at peace whit the lord. Ask the holy spirit to help you and to gide you.