No verses suggest the sending of Christ's disciples with the truth and power of the Gospel was restricted to the Jews, or House of Israel of the OT after Pentecost.
Joh 3:14 And as Moses lifted up the serpent in the wilderness, even so must the Son of man be lifted up:
Joh 3:15 That whosoever believeth in him should not perish, but have eternal life.
Joh 3:16 For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
Joh 3:17 For God sent not his Son into the world to condemn the world; but that the world through him might be saved.
Act 2:38 Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost.
Act 2:39 For the promise is unto you, and to your children, and to all that are afar off, even as many as the Lord our God shall call.
Eph 2:7 That in the ages to come he might shew the exceeding riches of his grace in his kindness toward us through Christ Jesus.
Eph 2:8 For by grace are ye saved through faith; and that not of yourselves: it is the gift of God:
Eph 2:9 Not of works, lest any man should boast.
Eph 2:10 For we are his workmanship, created in Christ Jesus unto good works, which God hath before ordained that we should walk in them.
Eph 2:11 Wherefore remember, that ye being in time past Gentiles in the flesh, who are called Uncircumcision by that which is called the Circumcision in the flesh made by hands;
Eph 2:12 That at that time ye were without Christ, being aliens from the commonwealth of Israel, and strangers from the covenants of promise, having no hope, and without God in the world:
Eph 2:13 But now in Christ Jesus ye who sometimes were far off are made nigh by the blood of Christ.
Eph 2:14 For he is our peace, who hath made both one, and hath broken down the middle wall of partition between us;
Eph 2:15 Having abolished in his flesh the enmity, even the law of commandments contained in ordinances; for to make in himself of twain one new man, so making peace;
Eph 2:16 And that he might reconcile both unto God in one body by the cross, having slain the enmity thereby:
Eph 2:17 And came and preached peace to you which were afar off, and to them that were nigh.
Eph 2:18 For through him we both have access by one Spirit unto the Father.
Eph 2:19 Now therefore ye are no more strangers and foreigners, but fellowcitizens with the saints, and of the household of God;
Eph 2:20 And are built upon the foundation of the apostles and prophets, Jesus Christ himself being the chief corner stone;
Eph 2:21 In whom all the building fitly framed together groweth unto an holy temple in the Lord:
Eph 2:22 In whom ye also are builded together for an habitation of God through the Spirit.
Grosnick does not believe Jesus or Paul.
LA