więc

1. ergo, so, therefore
2. (obsolete) in addition, as well as, too

chcesz

second-person singular present of chcieć

obiecać

to promise (to commit to something or action)

że

• Conj

  introduces a subordinate clause; that

• Particle

mu

• Pron

  dative singular mute of on

• Intj

nie

• Particle

  negation particle; no, not

• Verb
• Pron

będziesz

second-person singular future of być