'Observed' in the Bible

It is a night to be much observed unto Jehovah for bringing them out from the land of Egypt: this is that night of Jehovah, to be much observed of all the children of Israel throughout their generations.

Who said of his father, and of his mother, I have not seen him; Neither did he acknowledge his brethren, Nor knew he his own children: For they have observed thy word, And keep thy covenant.

Now the men observed diligently, and hasted to catch whether it were his mind; and they said, Thy brother Ben-hadad. Then he said, Go ye, bring him. Then Ben-hadad came forth to him; and he caused him to come up into the chariot.

I have remembered thy name, O Jehovah, in the night, And have observed thy law.

My soul hath observed thy testimonies; And I love them exceedingly.

I have observed thy precepts and thy testimonies; For all my ways are before thee.

The young man saith unto him, All these things have I observed: what lack I yet?

And he said unto him, Teacher, all these things have I observed from my youth.

And he said, All these things have I observed from my youth up.

For as I passed along, and observed the objects of your worship, I found also an altar with this inscription, TO AN UNKNOWN GOD. What therefore ye worship in ignorance, this I set forth unto you.