These Jews can be part of the house if they hold fast, endure to the end. That's tribulation doctrine for the Jews...Jacob's Trouble.
Hebrews 3
8 Harden not your hearts, as in the provocation, in the day of temptation in the wilderness: Jews
9 When your fathers tempted me, proved me, and saw my works forty years. Jews
10 Wherefore I was grieved with that generation, and said, They do alway err in their heart; and they have not known my ways. Jews
11 So I sware in my wrath, They shall not enter into my rest.) Millennial reign, restoration of the kingdom of Israel
12 Take heed, brethren, lest there be in any of you an evil heart of unbelief, in departing from the living God.
13 But exhort one another daily, while it is called To day; lest any of you be hardened through the deceitfulness of sin. Endure
14 For we are made partakers of Christ, if we hold the beginning of our confidence stedfast unto the end; Enduring to the end, see Matthew 24