Often, generic broad sweeping statements like this aren't absolutely true. One of the most famous verses in the Bible mentions both other and self-- you shall ove your neighbor as you love yourself.
The details of I Corinthians 14, for example, are still true, in spite of your broad statement. The one who speaks in tongues if there is no interpreter is to keep silent in the church, but he is still told to 'speak to himself and to God.'
Paul said he who speaks in tongues edifies himself. "I would that ye all spake with tongues." That's what he said about a self-edifying activity. But concerning an activity that edifies others, he said, 'but rather that ye prophesied.'
If self-edification were not allowed, we should not be allowed to pray or read the Bible alone. Who does reading the Bible benefit? Does it benefit God?
There is also the fact that we can build ourselves up so that we can be strong to help others, which applies to various forms of prayer and reading the Bible.
The details of I Corinthians 14, for example, are still true, in spite of your broad statement. The one who speaks in tongues if there is no interpreter is to keep silent in the church, but he is still told to 'speak to himself and to God.'
Paul said he who speaks in tongues edifies himself. "I would that ye all spake with tongues." That's what he said about a self-edifying activity. But concerning an activity that edifies others, he said, 'but rather that ye prophesied.'
If self-edification were not allowed, we should not be allowed to pray or read the Bible alone. Who does reading the Bible benefit? Does it benefit God?
There is also the fact that we can build ourselves up so that we can be strong to help others, which applies to various forms of prayer and reading the Bible.
Loving oneself is also called selfishness and there's nowhere the scriptures advocates for selfishness. The context of Jesus' words "..love thy neighbor as you love thy self.." is nothing more than "..do to others what you would want them do to you.."
Matt 22:38 This is the first and greatest commandment. 39And the second is like it: ‘Love your neighbor as yourself.’ 40All the Law and the Prophets hang on these two commandments.”
Matt 7:12 In everything, then, do to others as you would have them do to you. For this is the essence of the Law and the prophets.
Gal 5:14 The entire Law is fulfilled in a single decree: “Love your neighbor as yourself.” 15But if you keep on biting and devouring each other, watch out, or you will be consumed by each other.
A personal prayer for the purpose of self loving is not within the scope of the law and the prophets, it is nothing more than selfishness and no one in their right mind wakes up early in the morning to go to a joyful assembly to just love themselves, it'd be good if they stay at home and love themselves from there. This was the main problem in Corinth to which Paul was writing to correct- the reason he started his letter this way:
1 Cor 14:1 Follow the way of love and eagerly desire gifts of the Spirit, especially prophecy.
Paul was following up the case for love which he thoroughly expressed in the previous chapter:
1 Cor 13:4 Love is patient, love is kind. It does not envy, it does not boast, it is not proud. 5It does not dishonor others, it is not self-seeking, it is not easily angered, it keeps no record of wrongs. 6Love does not delight in evil but rejoices with the truth. 7It always protects, always trusts, always hopes, always perseveres.
Love is always always always about others and never about self. Self edification was indeed what was wrong in Corinth, no doubt about that.