The question is simple...is it faith that saves, or is it baptism that saves? Is a person saved at the point of baptism, or is he saved at the point of faith?
And, what Scriptures would you use to support your view?
OP question: Does baptismal regeneration violate the core teaching of justification by faith alone (sola fide)? Short answer, No.
Baptismal regeneration is when Christ baptizes with His indwelling Holy Spirit.
Spiritual baptism is ""preformed without hands"" by Christ alone. And is received thru Faith & faith alone.
Acts 1:
5 John truly baptized with water; but ye shall soon be baptized with the "Holy Spirit"
(NOTE: John the Baptist taught Jesus would baptize with the Holy Spirit (Matt 3:11, Mark 1:1-8 & Luke 3:16)
1 Cor 12:13 (A) For by one Spirit are we all baptized into one body,
(NOTE: By 1 Spirit/Christ's, all believer's are baptized (spiritually) into 1 body/Body of Christ. King James translators capitalized SPIRIT identifying the baptizers deity)
Col 2:11 In whom also ye are circumcised with the circumcision ""made without hands"" in putting off the body of the sins of the flesh by the circumcision of Christ:
(NOTE: The baptism of the Holy Spirit is a SPIRITUAL circumcision/covenant done without hands. Only Christ can baptize (spiritually done/without hands) with the indwelling Holy Spirit)
Rom 2:29 But he is a Jew, which is one inwardly; and circumcision is that of the heart, in the spirit, and not in the letter; whose praise is not of men, but of God.
(NOTE: God's truly chosen people undergo a Spiritual circumcision/baptism. Christ alone can preform this sealing action (Eph 1:13, 2 Cor 1:22 & Eph 4:30)
Deut 30:6 (A) The LORD thy God will circumcise thine heart.
All have sinned (Rom 3:23). The wages of sin is death; but the gift of God is eternal life through Jesus Christ our Lord (Rom 6:23)
(NOTE: We all deserve heavens sentence for the crime of sin = DEATH. However, when we believe/place our faith in Jesus sin payment & resurrection. Christ seal us with His indwelling Holy Spirit. (Eph 1:13, 2 Cor 1:22 & Eph 4:30). Our spiritual sealing is Christ's guarantee of our future resurrection onto eternal life with Him.)
KJV Dictionary Definition: TAB'ERNACLE, n. L. To dwell; to reside; to be housed; as we say, Christ tabernacled in the flesh Jn 1:14.
It is also applied to the temple. Ps.15.
A place of worship; a sacred place.
Our natural body. 2 Cor.5. 2 Pet. 1.
God's gracious presence, Rev.21.
NOTE: Ex 40:34 & 2 Chron 5:13-14 are shadows of the Lord filling us with His presents/glory/Spirit
Exodus 40:34 Then a cloud covered the tent of the congregation, and the glory of the LORD filled the tabernacle.
2 Chronicles 5:
13 (B) when they lifted up their voice with the trumpets, cymbals, instruments of musick & praised the LORD, saying, he is good; his mercy endureth forever: that then the house was filled with a cloud, even the house of the LORD;
14 (B) the glory of the LORD had filled the house of God.
NOTE: Acts 2:4 Jews on the Temple Mt 1st post resurrection Pentecost. Receive the promise (Lk 24:49, Jn 7:38-39, Acts 2:33) of God's, eternally sealing/saving, indwelling presents/glory/Spirit.
Acts 2:4 (A) And they were all filled with the Holy Ghost,
NOTE: Acts 10:45-45, 11:15,16,17. Seven years later gentiles are given/receive the promise (Lk 24:49, Jn 7:38-39, Acts 2:33) of God's, eternally sealing/saving, indwelling presents/glory/Spirit.
Acts 10:
44 While Peter yet spake these words, the Holy Ghost fell on all them which heard the word.
45 And they of the circumcision which believed were astonished, as many as came with Peter, because that on the Gentiles also was poured out the gift of the Holy Ghost.
Acts 11:
15 And as I began to speak, the Holy Ghost fell on them, as on us at the beginning.
16 Then remembered I the word of the Lord, how that he said, John indeed baptized with water; but ye shall be baptized with the Holy Ghost.
18 (C) they held their peace, and glorified God, saying, Then hath God also to the Gentiles granted repentance unto life.
1 Corinthians 3:16 Know ye not that ye are the temple of God, and that the Spirit of God dwelleth in you?
Emblem = A symbolic representation of a particular quality or concept:
Water baptism is an emblem: An outwardly visible expression of our indwelling Spiritual Baptism. (1 Cor 3:16, 6:19, 2 Cor 6:16, 2 Tim 1:14, Gal 4:6, Rom 8:9,11,15).
The Lord implemented two ordinances water baptism & the Lords supper. After conversion/receiving the Lords indwelling Holy Spirit, every believer should partake in both.