John 5:18: John teach that Jesus is making himself equal to God?

Apostle John stating the understanding or conclusion of the Jewish listeners of the Lord Jesus

“For this reason the Jews were seeking all the more to kill him, because he was not only breaking the Sabbath, but was also calling God his own Father, thereby making himself equal to God.” (John 5:18)

1st of all. Nowhere in the New Testament that Lord Jesus Christ introduced himself equal to the Father. Jesus is clear in his teaching that the FATHER is GREATER than him (John 10:29, John 14:28).

2nd. John is quoting the interpretation and conclusion of the Jews that “Jesus is breaking the Sabbath and he was calling God his own Father” which is according to the Jews “he is making himself equal to God” (John 5:18).

If calling God “FATHER” means “equal to god”, then the Jews are also making themselves equal to God for they also called God their “ONLY FATHER", 

“...We are not illegitimate children,” they protested. “THE ONLY FATHER WE HAVE IS GOD HIMSELF.” (John 8:41). 

The Jews are contradicting their statement on John 5:18, unless they insist that they are also Gods which is according to their definition “calling God ‘FATHER’ means equal to god”.

In fact, even our Lord Jesus Christ encourage us to call God “FATHER” and even the Apostles called God “FATHER”

"In this manner, therefore, pray: Our FATHER in Heaven, HALLOWED BE YOUR NAME" (Matthew 6:9)

"ONE GOD AND FATHER of all who is over all and through all and in all."(Ephesians 4:6)

3rd. And if breaking Sabbath means equal to God, Then the Apostles who breaks Sabbath (Luke 6:1-5, Matthew 12:1-2) are also equal to God? King David and his brethren who breaks Sabbath (Matthew 12:3-4) are also equal to God? Apostle Paul stated that it is ok not to observe Sabbath anymore (Colossians 2:16), does that mean that he is teaching that we are equal to God too? Most people today did not observe Sabbath anymore, does that mean that we are equal to God?

Regarding Sabbath, Sabbath is no longer in effect during Jesus’s times. The Law of Moses and the writings of the prophets were in effect only up to the time of John the Baptist (Luke 16:16). In fact, even during the time of the Israelite, God had put an end to the observance of Sabbath and caused it to be forgotten (Hosea 2:11, RSV, Lamentation 2:6, NKJV). That’s why Apostle teaches it is ok not to observe Sabbath anymore (Colossians 2:16). And the Jews are ignorant about these.

4th. Jesus corrected the ignorance of the Jews on John 5:18. As Jesus said “Very truly I tell you, the SON CAN DO NOTHING BY HIMSELF; he can do only what he sees his Father doing, because whatever the Father does the Son also does”(John 5:19). Jesus can do nothing by himself which is clear that the FATHER is greater than Jesus because Jesus CAN ONLY DO whatever he sees his FATHER doing. It means, Jesus CANNOT WORK on his own without the FATHER, because the FATHER is the one that sent him and is greater than Jesus.

But instead for the Trinitarians to side our Lord Jesus Christ, they chose to side the erroneous and false conclusion of the Jews that “he(Jesus) is making himself equal to God” (John 5:18), which is never and not a statement of our Lord Jesus Christ, for Jesus is clear in his teaching that the FATHER is greater than him(Christ) (John 10:29, JOHN 14:28). But Trinitarians keep on ignoring these verses in order to promote their erroneous and false doctrine “Jesus is God”.

And how can Jesus be a God if he attested that the FATHER is the ONLY TRUE GOD

“After Jesus said these things, he looked toward heaven and prayed, “Father, the time has come. Give glory to your Son so that the Son can give glory to you. And this is eternal life: that people can know YOU(FATHER), THE ONLY TRUE GOD, and that they can know Jesus Christ, the one you(FATHER) sent.” (John 17:1&3, ERV) 

Which is one: “Jesus answered, "The foremost is, 'HEAR, O ISRAEL! THE LORD OUR GOD IS ONE LORD”(Mark 11:29 a quotation of Deuteronomy 6:4)

Which is the LORD of Heaven and Earth: “At that time Jesus said, "I praise you, Father, LORD of heaven and earth” (Matt. 11:25, Luke 10:21)