Verbseoul.
하다 verb
위하다wihadato help, to serve, to benefit

To say to help, to serve, to benefit politely in the present tense, use 위해요 (wee-hae-yoh). Below is the full conjugation of 위하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
위해
wee-hae
위해요
wee-hae-yoh
위합니다
wee-hahm-nee-dah
Past
위했어
wee-hae-ssuh
위했어요
wee-hae-ssuh-yoh
위했습니다
wee-hae-sseum-nee-dah
Future
위할 거야
wee-hahl- -guh-yah
위할 거예요
wee-hahl- -guh-yae-yoh
위할 겁니다
wee-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
위하세요
wee-hah-sae-yoh
Suggestion / Let's Polite (요)
위해요
wee-hae-yoh
Question Polite (요)
위해요?
wee-hae-yoh-?
Connective “and” — (고)
위하고
wee-hah-goh
Conditional “if” — (면)
위하면
wee-hah-myuhn
Noun form — (기)
위함
wee-hahm