Note 4 at 1 Cor. 12:3: The first test to apply to any gift of the Spirit is to ask, "Does it glorify Jesus?" That's the point Paul is making. The Holy Spirit will never lead anyone to defame Jesus in any way. Jesus made it very clear that the Holy Spirit would only glorify Him (Jn. 15:26; see note 84 at Jn. 16:14, p. 499). Any utterance or act that denies Jesus is not from the Holy Spirit.

In Paul's day, there was still a transition being made from Judaism to Christianity. Some Jews were teaching that a keeping of the Old Testament law could produce salvation. They violently opposed Paul's teaching that faith alone in Jesus could produce salvation (see note 8 at Rom. 4:5, p. 762). Any utterance like that would be considered by Paul to be calling Jesus accursed and would definitely not be from the Holy Spirit.

Also, the pagan religions of Paul's day believed in many gods. Anyone who tried to make Jesus just another god or a way to God instead of the way to God (see note 10 at Jn. 14:6, p. 489) would be calling Him accursed. The Holy Spirit would never inspire anyone to do this.

Therefore, today, any group or individual that is claiming to be inspired of the Holy Spirit and yet rejects Jesus' own claims to deity (see ref. v at Jn. 10:30, p. 340 for list of notes on deity of Jesus) and His being the only way to the Father (Jn. 14:6) is not truly receiving their inspiration from the Holy Spirit. Those who are truly moved by the Holy Spirit in their utterances will always glorify Jesus.

So, the first test that any spiritual gift has to pass is answering that question, "Does it glorify Jesus?" Yet that's not the only test. It's possible for an utterance to be in line with scripture and yet not be motivated by the Spirit (see note 26 at v. 10 for an example).

Note 5 at 1 Cor. 12:3: As mentioned in note 9 at Romans 10:9, p. 815, there is more to saying "Jesus is Lord" than just the repeating of these words. In Mark 1:24, there is an instance where demons cried out that Jesus was the Holy one of God and yet we know that demons aren't inspired by the Holy Spirit (see note 1 at Mk. 1:24, p. 117).

Paul is saying that any utterance that glorifies Jesus as Lord is directed by the Holy Spirit. It is only through the Holy Spirit that anyone can recognize and glorify Jesus as Lord.