The same thing you obtained, is the same thing you fall away from!
JLB
If you obtain The Zeal of Yahweh, via His favor, He never losses you. A person cannot establish himself as Yahweh's by wickedness any more than a saved person can maintain his salvation by wickedness. A person DOES NOT obtain salvation by playing the part on TV.
You don't fall away from or depart from SOMETHING DIFFERENT, that what you obtained by believing in the first place.
JLB
Saved people obtain their salvation from Yahweh. He roots them in His righteousness, if they are truly His.
No root, no salvation. It's just that simply.
But the ones on the rock are those who, when they hear, receive the word with joy; and these have
no root, ...
. Luke 8:13
No wonder they fell away. They had no roots. It's proverbial that they should.
Proverbs 12:2-3 (LEB) The good obtains favor from Yahweh,but anyone who schemes, he condemns. A person will not be established by wickedness,but the root of the righteous will not be moved.
There's a reason Jesus quotes Isaiah to the Pharisees:
Isaiah 9:6-7 (LEB) For a child has been born for us;a son has been given to us.And the dominion will be on his shoulder,and his name is called Wonderful Counselor, Mighty God,Everlasting Father, Prince of Peace. His dominion will grow continually,and to peace there will be no end on the throne of David and over his kingdom,to establish it and sustain it with justice and righteousness now and forever.The zeal of Yahweh of hosts will do this.
Not the Pharisees.
Isaiah 37:30-32 (LEB) And this shall be the sign for you: the eating of volunteer plants this year, and in the second year self-seeded plants, and in the third year sow, reap, plant vineyards, and eat their fruit. And the remnant of the house of Judah that remain shall grow roots downwards and make fruit upwards. For a remnant shall go out from Jerusalem and survivors from mountain Zion.The zeal of Yahweh of hosts will do this.’
Matthew 13:21 But he does not have a root in himself, ...
Did you catch that? He DOES NOT have a root in himself (meaning He DOES NOT have The zeal of Yahweh in him, meaning he DOES NOT have any way to obtain or establish much less sustain his salvation).
Once again, OSAS (done right) is a testimony to the power of God resident/rooted in a saved person.
Yes, it's about steadfast belief, not sinning, faithfulness to God's commands, etc. As demonstrated by His Son.
But it all starts (and ends) with God and His zeal being rooted inside a saved person.
Once again, even Peter thought Jesus was the Christ but denied Him until He received The Holy Spirit inside him.